Every assembly quote you get will be built on one of two models: time or task. Both are fair; both can go wrong. Here’s how to pick, and how to keep either model honest.
How each model works
Hourly means you pay for time on site — typically £25–£45 per hour with a one-hour minimum. The meter runs through unpacking, building, wall-fixing and tidying.
Fixed price means a set fee per item (or for the whole job), agreed before anyone arrives. The assembler absorbs overruns; you absorb nothing.
When hourly wins
- Batches of small, quick items. Four bookcases and a couple of side tables fly by; per-item prices for each would add up to more than the two hours the whole batch actually takes.
- Jobs with unknowns you control. If you might add “while you’re here” tasks — a picture to hang, an extra shelf — hourly folds them in naturally.
- Experienced, well-reviewed assemblers. Speed is their profit and your saving; a fast professional on an hourly rate is often the cheapest way to get a lot built.
The risk: an open-ended clock. It’s managed with one question — “How long do you expect this to take, and will you tell me before going over?” — and by having everything ready so paid time isn’t spent moving boxes upstairs.
When fixed price wins
- Large single items. Wardrobes (especially PAX with sliding doors), bunk beds, big sideboards — the builds where an overrun is most likely and most expensive.
- Unfamiliar or budget brands. Poor instructions and mislabelled parts are the assembler’s problem under a fixed price, not yours.
- When you need certainty. Landlords billing a job to a budget, or anyone who just wants a number that won’t move.
The risk: padding. Fixed prices include a cushion for the slow days, so a straightforward job can cost more than it would hourly. The fix is comparison — get both a fixed quote and an hourly estimate, and see which side of the maths the assembler wants you on.
The questions that keep any quote honest
- Is travel included, or is there a call-out fee?
- Does the price include wall-anchoring where the instructions require it?
- Is packaging disposal included?
- For hourly: what’s your estimate for this list, and what’s the minimum charge?
- For fixed: what happens if a part is missing and you have to come back?
Ask all five and the difference between two quotes usually explains itself. For the rest of the vetting — insurance, reviews, red flags — see how to hire a flat pack assembler.
Frequently asked questions
What hourly rate do flat pack assemblers charge?
Typically £25–£45 per hour in most of the UK, with big-city rates at the top end and a minimum charge (often the first hour) almost universal. A very low hourly rate paired with a vague time estimate deserves scepticism.
Can I ask an hourly assembler for a time estimate up front?
Yes, and you should — a professional who has seen your item list can estimate within half an hour either way. Get the estimate in writing (a text is fine) and ask them to flag it before exceeding it.
Which is better for a whole-house job?
Ask for a day rate. Assemblers furnishing a whole property usually price by the day or half-day, which works out cheaper than either per-item or open-ended hourly for big batches.
Prices and timings on this page are indicative, based on typical quotes we see across the UK. Your job may cost more or less — the only way to know is to get quotes for your specific items and location. This site earns a fee when we pass enquiries to assembly firms; this never changes what you pay.